Setting up Process Simulate Standalone and Simatic.IT OPC UA server.
Gets a "Connection not Valid" error when setting up the External Connection.
The browser sees the correct URL and port, but fails to connect.
Solution
Even though being logged into the computer as administrator, Process Simulate was not opening as administrator. Manually launched Process Simulate as administrator (Run As Administrator), and then it was able to connect.
Notes and References
Hardware/Software Configuration
Platform: INTL64
OS: window
OS Version: 764SP1
Product: TECNOMATIX
Application: PROCESS_SIMULAT
Version: V13.1
Function: VIRT_COMMISSION
Ref: 001-7480046